I have taken over maintainership of the s390x support some time ago.
Update the AUTHORS file to reflect that.
David Woodhouse has helped out with test and build machines over the course
of many releases.
-Florian Krohm and Christian Borntraeger wrote and maintain the
-S390X/Linux port. Florian improved and ruggedised the regression test
-system during 2011.
+Florian Krohm and Christian Borntraeger wrote the initial S390X/Linux
+port. Andreas Arnez is the current maintainer and developer of it.
+Florian improved and ruggedised the regression test system during 2011.
Philippe Waroquiers wrote and maintains the embedded GDB server. He
also made a bunch of performance and memory-reduction fixes across